| 决不 | jué bù | not at all; simply (can) not |
| 不意 | bù yì | unexpectedly; unawareness; unpreparedness |
| 不相干 | bù xiāng gān | be irrelevant; have nothing to do with |
| 坚持不懈 | jiān chí bù xiè | to persevere unremittingly (idiom); to keep going until the end |
| 瞧不起 | qiáo bù qǐ | to look down upon; to hold in contempt |
| 不平等条约 | bù píng děng tiáo yuē | unequal treaty |
| 行不通 | xíng bu tōng | won't work; will get (you) nowhere |
| 怪不得 | guài bu de | lit. you can't blame it!; no wonder!; so that's why! |
| 不行了 | bù xíng le | on the point of death; dying |
| 禁不住 | jīn bu zhù | can't help it; can't bear it |
| 顾不得 | gù bu de | unable to change sth; unable to deal with |
| 动不动 | dòng bu dòng | apt to happen (usually of sth undesirable); frequently; happening easily (e.g. accident or illness) |
| 不正之风 | bù zhèng zhī fēng | unhealthy tendency |
| 不客气 | bù kè qi | you're welcome; impolite; rude; blunt; don't mention it |
| 不特 | bù tè | not only |
| 微不足道 | wēi bù zú dào | negligible; insignificant |
| 不切实际 | bù qiè shí jì | unrealistic; unpractical; impracticable |
| 受不了 | shòu bù liǎo | unbearable; unable to endure; can't stand |
| 吃不下 | chī bu xià | not feel like eating; be unable to eat any more |
| 不变资本 | bù biàn zī běn | constant capital |
| 比不上 | bǐ bù shàng | can't compare with |
| 不以为然 | bù yǐ wéi rán | not to accept as correct (idiom); to object; to disapprove; to take exception to |
| 说不上 | shuō bu shàng | to be unable to say or tell; to not be worth mentioning |
| 一成不变 | yī chéng bù biàn | nothing much changes (idiom); always the same; stuck in a rut |
| 不力 | bù lì | not do one's best; not exert oneself |
| 不可思议 | bù kě sī yì | inconceivable (idiom); unimaginable; unfathomable |
| 不得了 | bù dé liǎo | desperately serious; disastrous; extremely; exceedingly |
| 不屈不挠 | bù qū bù náo | unyielding; indomitable |
| 经不起 | jīng bu qǐ | can't stand it; to be unable to bear; to be unable to resist |
| 靠不住 | kào bu zhù | unreliable |
| 不折不扣 | bù zhé bù kòu | a hundred per cent; to the letter; out-and-out |
| 情不自禁 | qíng bù zì jìn | unable to restrain emotions; cannot help |
| 不备 | bù bèi | unprepared; off guard |
| 不失为 | bù shī wéi | can still be considered (to be...); may after all be accepted as |
| 免不了 | miǎn bù liǎo | unavoidable; can't be avoided |
| 不妙 | bù miào | (of a turn of events) not too encouraging; far from good; anything but reassuring |
| 不甘 | bù gān | unreconciled to; not resigned to; unwilling |
| 层出不穷 | céng chū bù qióng | more and more emerge; innumerable succession; breeding like flies (idiom) |
| 不由自主 | bù yóu zì zhǔ | can't help; involuntarily (idiom) |
| 一丝不苟 | yī sī bù gǒu | not one thread loose (idiom); strictly according to the rules; meticulous; not one hair out of place |
| 不遗余力 | bù yí yú lì | to spare no pains or effort (idiom); to do one's utmost |
| 不含糊 | bù hán hu | unambiguous; unequivocal; explicit; prudent; cautious; not negligent; unafraid; unhesitating; really good; extraordinary |
| 不兴 | bù xīng | out of fashion; outmoded; impermissible; can't |
| 对不住 | duì bù zhù | to let sb down; to be unfair; I'm sorry; pardon me (formal) |
| 不测 | bù cè | unexpected; measureless; unexpected circumstance; contingency; mishap |
| 差不多的 | chà bu duō de | the great majority |
| 不敢当 | bù gǎn dāng | lit. I dare not (accept the honor); fig. I don't deserve your praise; you flatter me |
| 不简单 | bù jiǎn dān | not simple; rather complicated; remarkable; marvelous |
| 不象话 | bù xiàng huà | unreasonable; shocking; outrageous; also written 不像话 |
| 不道德 | bù dào dé | immoral |
